| 摘要 |
PROBLEM TO BE SOLVED: To stably deliver a packaging material with a simple mechanism. SOLUTION: A pair of pull-down belts 3, 3 are arranged on the opposite side of a former tube 1 with respect to a vertical seal belt 13 on the proximal side, these pulley shafts 5 are coupled by a universal joint 6 to be driven by a single drive motor 7. A packaging material can be stably delivered by a simpler mechanism.
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